Partager

Détection des défaillances d'un capteur de température d'un système à pompe à chaleur.

Fault detection of temperature sensor of a heat pump system.

Numéro : pap. 1037

Auteurs : VISEK E., MAZZARELLA L., MOTTA M., et al.

Résumé

In this paper the influences on the performances of a heat pump are investigated when a temperature sensor failure occurs and possibilities to localise this type of failures are discussed. The heat pump under investigation is reversible air source type with vapour injection. Sensor failures are considered hidden ones because developed system controls can shade them and apparently heat pump is able to reach desired output. However, as it will be shown, such a malfunction has an effect on system performance and reliability. Two statistical methods are employed for temperature sensor failure detection of the considered heat pump: Principle Component Analysis (PCA) and Fuzzy Principle Component Analysis (FPCA). PCA is a widely used statistical technique for reducing data dimension based on linear transformation of original measured data and describes the significant variation in that data. PCA is vulnerable to the non-linearity in the systems and is very sensitive to noise in the original measured data, as any statistical method does. Therefore we propose the implementation of a non linear robust FPCA method using Gustafson-Kessel technique to divide the data into fuzzy clusters in order to diminish the noise in the original measurements and overbear the non-linearity in a heat pump system. We use these two methods to detect a failure in a temperature sensor signal and performance of the two methods will be presented and compared. Heat pump system experimental setup and test conditions will be described.

Documents disponibles

Format PDF

Pages : 11 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Fault detection of temperature sensor of a heat pump system.
  • Identifiant de la fiche : 30010454
  • Langues : Anglais
  • Source : Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Date d'édition : 16/06/2013

Liens


Voir d'autres communications du même compte rendu (424)
Voir le compte rendu de la conférence

Indexation